I use TB manage a lot (almost 20) mail accounts. And I do not like the threaded view...
I know it is possible to set each folder to unthreaded and I'm a aware, that 'mailnews.default_view_flags 0=unthreaded' will set all new folders to unthreaded. However with all my accounts it almost impossible to set manually all forders to unthreaded. And it is my impression that they sometimes even switch back from unthreaded to threaded...
I need a global option to just turn of threading for all folder views!
Please note: My request only is in regard to folder views, I think a threaded view for messages after a search makes sense.